First view the video on this blog:
http://ghoke.edublogs.org/2009/04/30/student-bloggers-connecting-through-conversation/
...and read this posting:
http://danielwh16.edublogs.org/2009/04/01/how-blogging-has-connected-me-to-a-global-audience/
Elementary
http://kootmansclass.blogspot.com/http://mrsjaffe.com/
http://asktheauthor.edublogs.org/
http://bookreport.edublogs.org/
http://huzzah.edublogs.org/ ( To see the individual student blogs on this site, click on the student names on the listed in the right hand column.)
http://classblogmeister.com/blog.php?blogger_id=41233 ( same as above)
Middle/Secondary
http://missbakersbiologyclass.com/blog/http://civilwarsallie.blogspot.com/
http://pestorekat.blogspot.com/
http://makaya06.edublogs.org/2009/04/10/30/
http://danielwh16.edublogs.org/